Scoria

Tachylite

Scoria vs Tachylite

Scoria

Tachylite

Add ⊕

Definition

Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities

Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt

History

Origin

Iceland

Discoverer

Unknown

Etymology

From late Middle English (denoting slag from molten metal), from Greek skōria refuse, from skōr dung

From German Tachylite, from tachy- + Greek lutos soluble, melting

Class

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Vesicular

Vitreous

Color

Black, Brown, Dark Grey to Black, Red

Black, Dark Brown

Maintenance

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy and Vesicular

Glassy

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Exterior Uses

Garden Decoration, Paving Stone

As Building Stone, As Facing Stone, Garden Decoration, Paving Stone

Other Architectural Uses

Curbing

Industry

Construction Industry

Cement Manufacture, Construction Aggregate, for Road Aggregate, In landscaping and drainage works

Cutting Tool, Knives, Landscaping, Scrapers

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts

Other Uses

Commercial Uses

As a traction material on snow-covered roads, Creating Artwork, High-temperature insulation, In gas barbecue grills

Cemetery Markers, Creating Artwork

Types

Basaltic Scoria and Andesitic Scoria

Volcanic glass

Features

Available in Lots of Colors and Patterns, Generally rough to touch, Surfaces are often shiny

Available in Lots of Colors and Patterns, Clasts are smooth to touch

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Scoria forms when magma containing huge amount of dissolved gas flows from a volcano during an eruption.

Tachylite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Composition

Mineral Content

Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica

Feldspar, Olivine

Compound Content

Ca, NaCl

Fe, Mg

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5-65.5

1 7

👆🏻

Grain Size

Fine Grained

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

White

Vermilion

Porosity

Highly Porous

Less Porous

Luster

Subvitreous to Dull

Resinous

Compressive Strength

70.00 N/mm²206.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

2.1

Specific Gravity

-99992.4

0 8.4

👆🏻

Transparency

Opaque

Density

-9999 g/cm³3.058 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.56 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Afghanistan, Indonesia, Japan, Russia

Cambodia, Russia, South Korea

Africa

Ethiopia, Kenya, Tanzania

East Africa

Europe

Greece, Hungary, Iceland, Italy, Turkey

England, Germany, Hungary, Iceland, Scotland, Sweden

Others

Hawaii Islands

Deposits in Western Continents

North America

Bahamas, Barbados, Canada, Costa Rica, Cuba, Jamaica, Mexico, USA

USA

South America

Argentina, Chile, Ecuador, Peru

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

Victoria

Scoria vs Tachylite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Scoria and Tachylite Reserves. Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities. Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Scoria vs Tachylite information and Scoria vs Tachylite characteristics in the upcoming sections.

Compare Igneous Rocks » More

Scoria vs Granodiorite

Scoria vs Amphibolite

Scoria vs Tonalite

» More Compare Igneous Rocks

Scoria vs Tachylite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Scoria vs Tachylite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Scoria and Properties of Tachylite. Learn more about Scoria vs Tachylite in the next section. The interior uses of Scoria include Decorative aggregates and Interior decoration whereas the interior uses of Tachylite include Decorative aggregates and Interior decoration. Due to some exceptional properties of Scoria and Tachylite, they have various applications in construction industry. The uses of Scoria in construction industry include Cement manufacture, Construction aggregate, For road aggregate, In landscaping and drainage works and that of Tachylite include Cutting tool, Knives, Landscaping, Scrapers.

More about Scoria and Tachylite

Here you can know more about Scoria and Tachylite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Scoria and Tachylite consists of mineral content and compound content. The mineral content of Scoria includes Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica and mineral content of Tachylite includes Feldspar, Olivine. You can also check out the list of all Igneous Rocks. When we have to compare Scoria vs Tachylite, the texture, color and appearance plays an important role in determining the type of rock. Scoria is available in black, brown, dark grey to black, red colors whereas, Tachylite is available in black, dark brown colors. Appearance of Scoria is Glassy and Vesicular and that of Tachylite is Glassy. Properties of rock is another aspect for Scoria vs Tachylite. The hardness of Scoria is 5-6 and that of Tachylite is 5.5. The types of Scoria are Basaltic Scoria and Andesitic Scoria whereas types of Tachylite are Volcanic glass. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Scoria is white while that of Tachylite is vermilion. The specific heat capacity of Scoria is 0.84 kJ/Kg K and that of Tachylite is 0.56 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Scoria is heat resistant, impact resistant, pressure resistant, wear resistant whereas Tachylite is heat resistant, impact resistant, wear resistant.